Cashu ecash protocol
summary
Demonstrates a working Cashu stack: users mint and melt via Lightning to get blind-signed e‑cash tokens, move tokens peer‑to‑peer as QR strings or printed paper, and redeem to Lightning with the same backing. Satoshi Pay implements bring‑your‑own‑mint, uses NOSTA/NIP17 relays and Rooster for pay‑per‑use AI, and keeps client‑side proofs stored locally so wallets don’t hold custody. Field reports show offline transfers via QR/Bluetooth succeed and privacy is preserved without KYC.
AI-written summary · about
chapters (10)
- 0:00Cashu protocol intro
- 1:48E-cash to Bitcoin-backed Cashu
- 3:34Cashu for Africa’s unbanked
- 6:44Traditional finance vs Cashu tokens
- 8:53Offline features and privacy
- 10:20Satoshi Pay wallet features
- 12:49Privacy AI with Cashu and Rooster
- 15:16Cashu for offline payments
- 17:27Grow the Cashu ecosystem
- 18:58Q&A on mint selection
related talks
25mThe State of Ecash Design
29mPrivacy Lego: Where Does Cashu Fit in Your Bitcoin Stack?
44mPrivate Web Payments with Cashu (and Nostr)
37meCash Debate: What Are The Tradeoffs?
02mintroduce
02h 12mlightning++ Berlin 2025 | Main Stage – Day 2 Part 2
24mLightning Starters Guide
15mBitchat Explained: How to Send Messages when the Internet Goes Down